The distinction between "good" and "evil" ist subjective
For example I'd expect my browser to protect me from sites like Facebook and Google as well as other tracking sites. I'd also expect all that a browser would remove all that cruft that modern "web designers" but into their sites.
I mean if a browser would enforce a "single origin" policy for Javascript, the web would already be a much nicer place. Pages would load _much_ faster because there wouldn't be so many needless DNS lookups.
Biting the hand that feeds IT
